<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */

/**
 * write out a file to disk
 *
 * @param string $filename
 * @param string $contents
 * @param boolean $create_dirs
 * @return boolean
 */
function smarty_core_write_file($params, &$smarty) {
  $_dirname = dirname($params['filename']);

  if ($params['create_dirs']) {
    $_params = array('dir' => $_dirname);
    require_once(SMARTY_CORE_DIR . 'core.create_dir_structure.php');
    smarty_core_create_dir_structure($_params, $smarty);
  }

  // write to tmp file, then rename it to avoid file locking race condition
  $_tmp_file = tempnam($_dirname, 'wrt');

  if (!($fd = @fopen($_tmp_file, 'wb'))) {
    $_tmp_file = $_dirname . DIRECTORY_SEPARATOR . uniqid('wrt');
    if (!($fd = @fopen($_tmp_file, 'wb'))) {
      $smarty->trigger_error("problem writing temporary file '$_tmp_file'");
      return false;
    }
  }

  fwrite($fd, $params['contents']);
  fclose($fd);

  if (DIRECTORY_SEPARATOR == '\\' || !@rename($_tmp_file, $params['filename'])) {
  // On platforms and filesystems that cannot overwrite with rename()
  // delete the file before renaming it -- because windows always suffers
  // this, it is short-circuited to avoid the initial rename() attempt
    @unlink($params['filename']);
    @rename($_tmp_file, $params['filename']);
  }
  @chmod($params['filename'], $smarty->_file_perms);

  return true;
}

/* vim: set expandtab: */

?>